Pipe-coupling



(No Model.)

G. A. DAUDT.

v PIPE COUPLING. No. 320,635. 7 Patented June 23, 1885.

UNITED STATES PATENT ()rricn.

GEORGE A. DAUDT, OF JERSEY CITY, NE\V JERSEY.

PIPE-COUPLING.

SPECIFICATION forming part of Letters Patent No. 320,635, dated June 23,1885.

Application filed April 7, 1883. (No model.) I

To all whom it may concern:

Be it known that I, GEORGE A. DAUDT, of Jersey City, in the county ofHudson and State of New Jersey, have invented a new and usefulImprovement in Pipe Couplings, of which the following is aspecification.

My improved coupling is more particularly intended for connecting thepipes or tubes of surfacecomlensers with their tube-plates ortube-sheets, but may be employed in feedwater heaters, or in coolers forvarious purposes.

An important object of my invention is to provide a coupling for thetubes 01" a condenser, heater, or cooler, which will admit of arrangingthe tubes in clusters or groups near together, and of forming a singleconnection for each cluster or group of tubes, of small size as comparedwith the size of the cluster or group; and a further object of theinvention is to provide for the free drainage of all water ofcondensation from the tubes, so that they will not remain partly filledwith dead-water while the condenser or cooler is in use.

The invention consists in a coupling or con nection composed of ascrew-threaded tubular portion provided with a shoulder and nut, wherebyit may be secured in a tube-sheet or tube-plate, and a number ofbranches extending from the screw threaded portion, the branches whichare lowermost being approximately in line horizontally with the bottomof the screw-threaded portion, and the branches which are uppermostbeing offset upward from the top of said screw-threaded portion.

The invention also consists in a coupling or connection composed of atubular screwthreaded portion provided with an inwardlybeveled shoulderand a nut,whereby it may be secured in a tube sheet or plate, and a number of branches extending from such screwthreaded portion, as more fullyhereinafter described.

In the accompanying drawings, Figure 1 is a sectional view of a portionof a condenser embodying my invention. Fig. 2 is a sectional view of aportion of the tubesheet and one of the couplings on a larger scale.Fig. 3 is an end view of the coupling shown in Fig. 2; and Fig. 4 is asectional view of a tubesheet and acoupling of slightly modified form.

Similar letters of reference designate corresponding parts in all thefigures.

A designates the shell or casing of the condenser, into which coolingwater is to bede- I livered by a'pipe, (not here shown,) and from whichthe water is delivered by a'pipe, a.

The shell or casing A contains U-shaped tubes B. The upper branches ofthese tubes lead from a chamber, 1), and constitute direct tubes,whilethe lower branches lead to a chamher, 0, and constitute return-tubes.Steam enters the chamber 1) by a pipe, d, and after passing through thetubes B escapes into the chamber 0, and so on through other tubes andchambers. (Not here shown.) The tubes B may be supported at their endsby a steadiment, 0. As here shown, the tubes are arranged in groups orclusters of four, and each four tubes are connected with the tube sheetor plate G by a coupling, D, embodying my in vent-ion. Each coupling Dconsists of a castmetal casing provided with four branches, f f

ff, which converge into a single branch extension or tubular portion, g,which passes through the plate 0. The branch or extension 9 isexternally screw-threaded, and is furnished with a collar or shoulder,g, and a nut, h. A packing-ring, 9*, is placed against the shoulder, andthe nut h is screwed up to form a tightjoint. The face of the collar orshoulder g is here represented as beveled inward, as shown in Fig. 2,and the packingring /flwhich is of corresponding shape, will be securelyheld and prevented from spreading when the nut h is screwed up. The nut71, as here shown, is provided with lugs or cars It, projecting axiallyfrom it, and when thus made the nut may be turned by means of a notchedtube where the couplings are arranged so close together that the nutscannot be conveniently turned with a wrench.

The tubes 13 may be connected with the branches f f in any suitablemanner. I may, for example, bore out the branches, as shown at t, toreceive the tubes and solder, or sweat the tubes in the branches to formtightjoints. The branches f, which are lowermost, are approximately inline horizontally with the bottom of the branch or portion 5 but thebranches f, which are uppermost, are offset above the top of saidportion 9. The tubes will then drain themselves clear of water, andthere will no water of condensation remain therein.

Obviously the couplings might have any other number of branches fortubes than four.

In Fig. 4 I have represented a coupling which is employed only toestablish communication between a number of tubes, and not to afford anoutlet from or an inlet to said tubes. It differs from the couplingbefore described only in the arrangement of the branches f and in havingthe extension 9 internally screwthreaded and closed by a screw-plug j.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A coupling or connection composed of a screw-threaded portion, 51,provided with a I shoulder and nut, whereby it may be secured in atube-plate or tube-sheet, and a number of branches, the lower branches,f, being ap- 2o proximately in line horizontally with the bottom of theportion and the upper branches, f, being offset above said portionsubstantially as herein described.

2. The coupling or connection comprising 25

